Re: Data structure for plotting monotonically expanding data set

On 27/05/2021 21.28, Loris Bennett wrote: > Hi, > > I currently a have around 3 years' worth of files like > > home.20210527 > home.20210526 > home.20210525 > ... > > so around 1000 files, each of which contains information about data > usage in lines like > > namekb > alice 1

Re: Applying winpdb_reborn

On 30/05/2021 11.52, Rich Shepard wrote: > On Sun, 30 May 2021, Chris Angelico wrote: > Please excuse my long-winded description of a FORTRAN IV bug in an lake > ecosystem energy model I wrote at the University of Illinois in the early > 1970s. It is an example of what you wrote above. > > The pr

Re: Definition of "property"

On 31/05/2021 04.57, Irv Kalb wrote: > I am doing some writing (for an upcoming book on OOP), and I'm a little > stuck. > > I understand what a "property" is, how it is used and the benefits, but > apparently my explanation hasn't made the light bulb go on for my editor. > The editor is aski

Re: Posting code on stackoverflow

On 06/06/2021 13.56, Terry Reedy wrote: > On 6/5/2021 5:36 PM, Rich Shepard wrote: >> I tried to post a question on stackoverflow.com which included a bunch of >> code (entered after clicking the box 'code'). I noticed that lines were >> wrapped but could not find how to expand the input box so the

Terminology: EU language skills, and Master to Main (or ...)

[to folk subscribed to both the Python list and Python-Tutor: apologies for cross-posting] Regarding levels of skill or complexity in learning, the European Union has been working on "The Common European Framework of Reference for Languages: Learning, Teaching, Assessment". It also standardises t

Re: Terminology: EU language skills, and Master to Main (or ...)

Hi, see below On 13/06/2021, dn via Python-list wrote: > [to folk subscribed to both the Python list and Python-Tutor: apologies > for cross-posting] > > > Regarding levels of skill or complexity in learning, the European Union > has been working on "The Common European

optimization of rule-based model on discrete variables

Hi, I have, say 10 variables (x1 ... x10) which can assume discrete finite values, for instance [0,1 or 2]. I need to build a set of rules, such as: 1) if x1==0 and x2==1 and x10==2 then y = 1 2) if x2==1 and x3==1 and x4==2 and x6==0 then y = 0 3) if x2==0 and x3==1 then y = 2 4) if x6==0 and x7

Re: optimization of rule-based model on discrete variables

Il Mon, 14 Jun 2021 19:39:17 +1200, Greg Ewing ha scritto: > On 14/06/21 4:15 am, Elena wrote: >> Given a dataset of X={(x1... x10)} I can calculate Y=f(X) where f is >> this rule-based function. >> >> I know an operator g that can calculate a real value from Y: e = g(Y) >> g is too complex to be

Re: Where did the message go?

On 15/06/2021 01.00, Grimble wrote: > I have two machines running Mageia 8 and Python 2.8.9, They use the same > Python script to maintain a list of changed packages from dnf update and > dnf install. In addition the script sends a short email message to my > main email address. The problem is: the

Re: Php vs Python gui (tkinter...) for small remote database app

On 15/06/2021 07.17, Pascal B via Python-list wrote: > Hi, > I would like to know if for a small app for instance that requires a > connection to a remote server database if php is more suitable than Python > mainly regarding security. > Php requires one port for http and o

Re: Behaviour of pop() for dictionaries

On 15/06/2021 09.18, BlindAnagram wrote: > On 14/06/2021 20:43, Chris Angelico wrote: >> On Tue, Jun 15, 2021 at 5:41 AM BlindAnagram ... > No it isn't hard to use popitem() but it evidently proved hard for me to > remember that it was there. If that's a problem, you're going to love using deques

Re: optimization of rule-based model on discrete variables

Il Tue, 15 Jun 2021 10:40:05 +1200, Greg Ewing ha scritto: > On 15/06/21 12:51 am, Elena wrote: > Hmmm, so the problem breaks down into two parts: > (1) find a vector Y that minimises g (2) find a set of rules that will > allow you to predict each component of Y from its corresponding X values >

Re: optimization of rule-based model on discrete variables

Il Tue, 15 Jun 2021 01:53:09 +, Martin Di Paola ha scritto: > From what I'm understanding it is an "optimization problem" like the > ones that you find in "linear programming". > > But in your case the variables are not Real (they are Integers) and the > function to minimize g() is not linear

Re: Where did the message go?

On 16/06/2021 04.47, Chris Angelico wrote: > On Wed, Jun 16, 2021 at 2:41 AM Grimble wrote: >> Thanks for reminding me of the log files. I've worked out that the >> message on machine H (for haydn, which shows my preferred music genre) >> was bouncing because haydn.. was not a registered

Re: Behaviour of pop() for dictionaries

On 15/06/2021 21.37, BlindAnagram wrote: > On 15/06/2021 00:11, dn wrote: >> On 15/06/2021 09.18, BlindAnagram wrote: >>> On 14/06/2021 20:43, Chris Angelico wrote: On Tue, Jun 15, 2021 at 5:41 AM BlindAnagram >> ... > I think the difference here is that I know I am going to have to look at >

Re: optimization of rule-based model on discrete variables

Il Wed, 16 Jun 2021 11:37:42 +1200, Greg Ewing ha scritto: > On 15/06/21 10:07 pm, Elena wrote: >> After the optimization, I will use f just to predict new Xi. > > So you're going to use f backwards? > > I don't see how that will work. Where are you going to find a new yi to > feed into the inve

Re: tkinter: tksheet

On 17/06/2021 08.45, Rich Shepard wrote: > On Wed, 16 Jun 2021, Terry Reedy wrote: > >> Somewhat sparse doc at >> https://github.com/ragardner/tksheet/blob/master/DOCUMENTATION.md#5-modifying-table-data >> >> insert_row() > > Terry, > > I'm reading this now and saw that. > >> and change the col

Re: Optimizing Small Python Code

large n it would become obvious. jan On 24/06/2021, Avi Gross via Python-list wrote: > Yes, I agree that if you do not need to show your work to a human, then the > problem specified could be solved beforeand and a simple print statement > would suffice. > > Ideally you want to make

Re: Optimizing Small Python Code

ity of an object, such as a piece of text, is the length of a shortest computer program (in a predetermined programming language) that produces the object as output". cheers jan On 24/06/2021, Avi Gross via Python-list wrote: > Jan, > > As an academic discussion, yes, many enhance

Re: a simple question

On 27/07/2021 10.19, Glenn Wilson via Python-list wrote: > I recently downloaded the latest version of python, 3.9.6. Everything works > except, the turtle module. I get an error message every time , I use basic > commands like forward, backward, right and left. My syntax i

Re: SQLALchemy: update with in clause from kwargs

On 04/08/2021 13.08, Larry Martell wrote: > I am trying to write a function that takes kwargs as a param and > generates an update statement where the rows to be updated are > specified in an in clause. > > Something like this: > > def update_by_in(self, **kwargs): > filter_group = []

Re: Errors and some bugs

On 09/08/2021 15.12, Himanshu Gupta wrote: > While running some pip command to install spacy package for ver3.9 I always > face trouble can you provide a solution The short answer is "yes", but what is the problem? Please copy-paste the install command and the (full) error message, from the termi

Re: on slices, negative indices, which are the equivalent procedures?

Apologies for lateness. Coincidentally, I've been asked to speak to our local Python Users' Group on slicing. Herewith an attempt to modify those demos around your data/question. Apologies if the result is thus somewhat lacking in flow. Also, whereas I prefer to illustrate 'how it works', I percei

Re: on slices, negative indices, which are the equivalent procedures?

On 12/08/2021 02.59, Jack Brandom wrote: > dn writes: > ... >> Also, whereas I prefer to illustrate 'how it works', I perceive that you >> are used to learning 'rules' and only thereafter their application (the >> teaching-practice under which most of us learned) - so, another reason >> for mixi

Re: on slices, negative indices, which are the equivalent procedures?

On 12/08/2021 10.32, Dennis Lee Bieber wrote: > On Wed, 11 Aug 2021 11:59:11 -0300, Jack Brandom > declaimed the following: >> Where are these production rules coming from? They're not at >> https://docs.python.org/3/reference/grammar.html >> The word ``stride'' doesn't appear in this grammar.

Re: on writing a while loop for rolling two dice

On 29/08/2021 08.46, Hope Rouselle wrote: > Here's my solution: > > --8<---cut here---start->8--- > def how_many_times(): > x, y = 0, 1 > c = 0 > while x != y: > c = c + 1 > x, y = roll() > return c, (x, y) > > Why am I unhappy? I'm wish I cou

Re: on writing a while loop for rolling two dice

On 29/08/2021 20.06, Peter Otten wrote: ... > OK, maybe a bit complicated... but does it pay off if you want to > generalize? > def roll_die(faces): > while True: yield random.randrange(1, 1 + faces) > def hmt(faces, dies): > for c, d in enumerate(zip(*[roll_die(faces)]*dies), 1

Re: on writing a while loop for rolling two dice

On 29/08/2021 22.24, Chris Angelico wrote: > On Sun, Aug 29, 2021 at 8:14 PM dn via Python-list > wrote: >> Efficiency: >> - wonder how max( d ) == min( d ) compares for speed with the set() type >> constructor? > > That may or may not be an improvement. > >&

Re: on writing a while loop for rolling two dice

On 30/08/2021 00.47, Peter Otten wrote: > On 29/08/2021 12:13, dn via Python-list wrote: >> On 29/08/2021 20.06, Peter Otten wrote: >> ... >>> OK, maybe a bit complicated... but does it pay off if you want to >>> generalize? >>> >>>

Re: The sqlite3 timestamp conversion between unixepoch and localtime can't be done according to the timezone setting on the machine automatically.

On 31/08/2021 11.07, Dennis Lee Bieber wrote: > On Sun, 29 Aug 2021 19:49:19 -0700 (PDT), "[email protected]" > declaimed the following: ... > Might have helped to mention you were in China... To me, CST is North > America Central Standard Time (and I'd have expected this time of year to >

Struggling to understand timedelta rpesentation when applying an offset for an hour earlier - why is days = -1?

Hi, I wonder if anyone can help I am struggling to understand the representation of timedelta when used in conjunction with astimezone. Given the code below, in a python interactive interpreter, I am trying to calculate a resultant datetime an hour earlier from a UTC datetime ```bash

Re: The sqlite3 timestamp conversion between unixepoch and localtime can't be done according to the timezone setting on the machine automatically.

On 01/09/2021 00.45, Chris Angelico wrote: > On Tue, Aug 31, 2021 at 8:55 PM MRAB wrote: >> On 2021-08-31 02:16, dn via Python-list wrote: >>> On 31/08/2021 11.07, Dennis Lee Bieber wrote: >>>> On Sun, 29 Aug 2021 19:49:19 -0700 (PDT), "hongy...@gmail

Re: The sqlite3 timestamp conversion between unixepoch and localtime can't be done according to the timezone setting on the machine automatically.

On 01/09/2021 09.13, Chris Angelico wrote: > On Wed, Sep 1, 2021 at 6:38 AM dn via Python-list > wrote: >>> Yeah. I do recommend making good use of the IANA tzinfo database >>> though (especially since Python 3.9 made that a bit easier to access), >>> as it'

Re: The sqlite3 timestamp conversion between unixepoch and localtime can't be done according to the timezone setting on the machine automatically.

> Yeah. And if you think you've heard it all, sign up for the > tzdata-announce mailing list and wait for the next phenomenon. I think > Egypt (Africa/Cairo) is currently in the lead for weirdest timezone > change, for (with short notice) announcing that they'd have DST during > summer but not duri

Re: The sqlite3 timestamp conversion between unixepoch and localtime can't be done according to the timezone setting on the machine automatically.

On 01/09/2021 11.27, MRAB wrote: > On 2021-08-31 23:31, Chris Angelico wrote: >> On Wed, Sep 1, 2021 at 8:22 AM MRAB wrote: >>> >>> [snip] >>> In the EU, DST in the member states changes at the same time. It's not >>> like the US where it ripples across the timezones, so the differences >>> vary d

Re: Problem with python

On 05/09/2021 06.27, Igor Korot wrote: > Hi, ALL, > > [code] > igor@WaylandGnome ~/bakefile $ python > Python 3.9.6 (default, Aug 8 2021, 17:26:32) > [GCC 10.3.0] on linux > Type "help", "copyright", "credits" or "license" for more information. from distutils import sysconfig print sysc

Re: on writing a while loop for rolling two dice

On Tue, 07 Sep 2021 14:53:29 +, Grant Edwards wrote: > On 2021-09-06, Stefan Ram wrote: >> "Avi Gross" writes: >>> In languages like C/C++ there are people who make up macros like: >>>#define INDEFINITELY_LOOP while (true) >>>Or something like that and then allow the preprocessor to replace

Friday Finking: Contorted loops

Why does Python not have a repeat-until loop construct? (or should that be 'modern programming languages'?) This is a perennial question (one contributor calling it "immemorial"), but there seem to be reasons why the Python Interpreter would find such a construct awkward, or is otherwise unable to

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Re: on writing a while loop for rolling two dice

On 31/08/2021 01.50, Chris Angelico wrote: > On Mon, Aug 30, 2021 at 11:13 PM David Raymond > wrote: >> >>> def how_many_times(): >>> x, y = 0, 1 >>> c = 0 >>> while x != y: >>> c = c + 1 >>> x, y = roll() >>> return c, (x, y) >> >> Since I haven't seen it used in answers yet, her

Re: on writing a while loop for rolling two dice

On 11/09/2021 18.03, Chris Angelico wrote: > On Sat, Sep 11, 2021 at 3:26 PM dn via Python-list > wrote: >> >> On 31/08/2021 01.50, Chris Angelico wrote: >>> On Mon, Aug 30, 2021 at 11:13 PM David Raymond >>> wrote: >>>> >>>&

Re: Friday Finking: Contorted loops

On Sun, 12 Sep 2021 10:11:15 +0200, jak wrote: > -- snip -- >> >> An inconsistency that I have been able to notice is this: >> someone suggests to remedy the absence of the do-while with: >> while True: >> ... >> if condition: >> break >> the problem arises if the while has

Re: ANN: Dogelog Runtime, Prolog to the Moon (2021)

On Thu, 16 Sep 2021 03:26:39 +1000, Chris Angelico wrote: > On Thu, Sep 16, 2021 at 3:17 AM Mostowski Collapse > wrote: >> >> I really wonder why my Python implementation is a factor 40 slower than >> my JavaScript implementation. >> Structurally its the same code. >> >> > Very hard to know. Your

Re: ANN: Dogelog Runtime, Prolog to the Moon (2021)

On Wed, 15 Sep 2021 18:23:10 +0200, Mostowski Collapse wrote: > I really wonder why my Python implementation is a factor 40 slower than > my JavaScript implementation. > Structurally its the same code. > > You can check yourself: > > Python Version: > https://github.com/jburse/dogelog-moon/blob/

Re: ANN: Dogelog Runtime, Prolog to the Moon (2021)

On Wed, 15 Sep 2021 11:31:48 -0700, Mostowski Collapse wrote: > There is a further problem with this: > >> for i,term in enumerate(term.args): >> mark_term(term.args[i]) > > It should read: > > for i,help in enumerate(term.args): > mark_term(help) > > But then i isn't need. even Better

Re: ANN: Dogelog Runtime, Prolog to the Moon (2021)

On Wed, 15 Sep 2021 18:40:52 +, alister wrote: > On Wed, 15 Sep 2021 11:31:48 -0700, Mostowski Collapse wrote: > >> There is a further problem with this: >> >>> for i,term in enumerate(term.args): >>> mark_term(term.args[i]) >> >> It should read: >> >> for i,help in enumerate(term.args

Re: ANN: Dogelog Runtime, Prolog to the Moon (2021)

On Wed, 15 Sep 2021 11:48:18 -0700, Mostowski Collapse wrote: > And how do you iterate over the first n-1 elements of a list with n > elements? This is what my code does: > > i = 0 while i < len(term.args) - 1: > mark_term(term.args[i]) > i += 1 term = term.args[i] > > You can try yourse

Re: ANN: Dogelog Runtime, Prolog to the Moon (2021)

On Wed, 15 Sep 2021 11:56:47 -0700, Mostowski Collapse wrote: > What could be slow, repeatedly requesting the "args" > field. Maybe I should do: > > help = term.args i = 0 while i < len(help) - 1: > mark_term(help[i]) > i += 1 term = help[i] > No this construct is a common error in new p

Re: The code version of python -i

Abdur-Rahmaan, Apologies for delay: several last-minute tasks were landed on me, so I haven't been able to 'read the list' since last week. > If i have a file name flower.py and i add x = 1 in it. > When i run python -i flower.py i get a shell > > If type x i get 1 x > 1 > > The value

Re: Question again

On 17/09/2021 12.25, Avi Gross via Python-list wrote: > I wonder if this is yet another case when a pop-up window closes rapidly > when done and any last text written is just not perceived. > > Good design in such cases makes a final pause till the user acknowledges in > some wa

Re: XML Considered Harmful

On Tue, 21 Sep 2021 13:12:10 -0500, Michael F. Stemper wrote: > On the prolog thread, somebody posted a link to: > > > One thing that it tangentially says is "XML is not the answer." > > I read this page right when I was about to write an

Re: XML Considered Harmful

On Tue, 21 Sep 2021 14:22:52 -0500, Michael F. Stemper wrote: > On 21/09/2021 13.49, alister wrote: >> On Tue, 21 Sep 2021 13:12:10 -0500, Michael F. Stemper wrote: >> >>> On the prolog thread, somebody posted a link to: >>> >>> >>> One thi

Re: XML Considered Harmful

On 22/09/2021 07.22, Michael F. Stemper wrote: > On 21/09/2021 13.49, alister wrote: >> On Tue, 21 Sep 2021 13:12:10 -0500, Michael F. Stemper wrote: >> >>> On the prolog thread, somebody posted a link to: >>> Given the source, shouldn't one

Re: XML Considered Harmful

On 24/09/2021 14.07, Stefan Ram wrote: > dn writes: >> With that, why not code it as Python expressions, and include the module? > > This might create a code execution vulnerability if such > files are exchanged between multiple parties. The OP's spec, as quoted earlier(!), reads: "It's m

Re: XML Considered Harmful

On 25/09/2021 06.59, Peter J. Holzer wrote: > There are a gazillion formats and depending on your needs one of them > might be perfect. Or you may have to define you own bespoke format (I > mean, nobody (except Matt Parker) tries to represent images or videos as > CSVs: There's PNG and JPEG and WEB

Re: XML Considered Harmful

On 26/09/2021 10.07, Stefan Ram wrote: > "Michael F. Stemper" writes: >> fitting hierarchical >> data into rows/columns just seems wrong > > There were hierarchical database management systems like > IMS by IBM based on that point of view. Today, almo

Re: XML Considered Harmful

On 26/09/2021 10.48, [email protected] wrote: > On 2021-09-25 at 15:20:19 -0500, > "Michael F. Stemper" wrote: > >> ... For instance, if >> I modeled a fuel like this: >> >> >> ton >> 21.96 >> 18.2 >> ... > Disclaimer: I am not a big XML fan, for a number of

Re: Posts from gmane no longer allowed?

On 27/09/2021 06.34, Grant Edwards wrote: > On 2021-09-26, Ethan Furman wrote: >> On 9/26/21 9:21 AM, Grant Edwards wrote: >>> On 2021-09-26, Chris Angelico wrote: >> I'm not sure whether the policy change happened on python-list, or at gmane. From the look of the error message you got,

Re: XML Considered Harmful

On 25/09/2021 11.26, David L Neil via Python-list wrote: > On 25/09/2021 11.00, Chris Angelico wrote: > >> Invented because there weren't enough markup languages, so we needed another? > > Anything You Can Do I Can Do Better > https://www.youtube.com/watch?v=_UB1YAsPD

OT: AttributeError

On 29/09/2021 10.50, Stefan Ram wrote: > (For Python programmers who have watched "Game of Thrones".) > > |>>> class girl: > |... pass > |... > |>>> girl = girl() > |>>> print( girl.name ) > |Traceback (most recent call last): > | File "", line 1, in > |AttributeError: A girl has no name.

Re: XML Considered Harmful

On 29/09/2021 06.53, Michael F. Stemper wrote: > On 28/09/2021 10.53, Stefan Ram wrote: >> "Michael F. Stemper" writes: >>> Well, I could continue to hard-code the data into one of the test >>> programs >> >>    One can employ a gradual path from a program with hardcoded >>    data to an entity sh

Re: OT: AttributeError

On 29/09/2021 12.21, Chris Angelico wrote: > On Wed, Sep 29, 2021 at 9:10 AM <[email protected]> wrote: >> >> On 2021-09-29 at 11:38:22 +1300, >> dn via Python-list wrote: >> >>> For those of us who remember/can compute in binary, octal,

Re: OT: AttributeError

On 29/09/2021 19.16, Greg Ewing wrote: > On 29/09/21 3:03 pm, [email protected] wrote: >> Who thinks in little >> endian?  (I was raised on 6502s and 680XX CPUs; 8080s and Z80s always >> did things backwards.) > > The first CPU I wrote code for was a National SC/MP, which doesn't

Re: Definitive guide for Regex

On 01/10/2021 06.16, Barry Scott wrote: > > >> On 30 Sep 2021, at 12:29, Shaozhong SHI wrote: >> >> Dear All, >> >> I am trying to look for a definitive guide for Regex in Python. >> Can anyone help? > > Have you read the python docs for the re module? I learned from Jeffrey Friedl's book "Ma

Re: How to pass a method as argument?

On 30/09/2021 18.11, Anil Anvesh wrote: > I want to write a python calculator program that has different methods to > add, subtract, multiply which takes 2 parameters. I need to have an execute > method when passed with 3 parameters, should call respective method and > perform the operation. How

Re: Understanding the working mechanis of python unary arithmetic operators.

On 06/10/2021 10.10, Chris Angelico wrote: > On Wed, Oct 6, 2021 at 7:52 AM [email protected] > wrote: >> >> On Saturday, October 2, 2021 at 4:59:54 PM UTC+8, [email protected] wrote: This thread seems to have been very one-sided. Either I've forgotten selective use of the DEL-key, or the abo

Re: Selenium py3.8+ DepreciationWarnings - where to find doc to update code?

The issues illustrated likely have less to do with Python than with Selenium (or even Firefox - depending how far back we need to go). That and our fate with the many web-search engines prioritising 'authoritative sources' in their results. Such definition includes 'clicks' over time. It fails to

Re: New assignmens ...

On 23/10/2021 08.34, Chris Angelico wrote: > On Sat, Oct 23, 2021 at 6:24 AM Jon Ribbens via Python-list > wrote: >> >> On 2021-10-22, Stefan Ram wrote: >>> Paulo da Silva writes: >>>> Why doesn't this work >>>> if (self.ctr:=self.c

Re: New assignmens ...

With apologies for pressing Send too early... On 23/10/2021 08.41, dn via Python-list wrote: > On 23/10/2021 08.34, Chris Angelico wrote: >> On Sat, Oct 23, 2021 at 6:24 AM Jon Ribbens via Python-list >> wrote: >>> >>> On 2021-10-22, Stefan Ram wrote: >&

Re: New assignmens ...

On 23/10/2021 12.51, Greg Ewing wrote: > On 23/10/21 8:49 am, dn wrote: >> Whereas, creating a list (or tuple...) is legal because the structure's >> name is an "identifier"! > > No, the restriction only applies to the LHS. The list construction > is on the RHS. That contention (above) may have

Re: New assignmens ...

On 26/10/2021 10.45, Chris Angelico wrote: > On Tue, Oct 26, 2021 at 8:42 AM Avi Gross via Python-list > wrote: >> Personally, I don't care what is done and suspect I will rarely feel much >> need to use the current walrus operator, let alone an enhanced Odobenus &g

The task is to invent names for things

Some time ago I watched a video of a Raymond Hettinger talk. In it he recounted answering his son's question of 'what do you do, Dad?' by suggesting that programmers spend much?most of their time thinking of names - and good names are better than "n = name", etc. This theme developed throughout the

Re: The task is to invent names for things

On 27/10/2021 11.16, Stefan Ram wrote: > dn writes: >> Some time ago I watched a video of a Raymond Hettinger talk. In it he >> recounted answering his son's question of 'what do you do, Dad?' > > The Mental Game of Python - Raymond Hettinger (PyBay 2019) > > Around minute 21, Raymond says: >

Re: The task is to invent names for things

On 27/10/2021 11.21, Stefan Ram wrote: > [email protected] (Stefan Ram) writes: >> The Mental Game of Python - Raymond Hettinger (PyBay 2019) >> |What daddy does is make new words to make computers easier to use." > > BTW: It now also reminds me of: > > |What I Do > | > |I build paradigms

Re: Create a contact book

On 27/10/2021 04.16, Avi Gross via Python-list wrote: > Chris, > > I think it is time someone set up a business where they do the homework for > people for a mere $1,000 or so per hour. Anonymously, of course. And we can > refer requests for free homework advice there. > >

Re: New assignmens ...

On 24/10/2021 22.23, O365 Dict wrote: > Well I have the following use case: > > while (temp_result := calculate_next_couple(a, b))[1]: > a, b = temp_result > more calculations > > Which IMO would be clearer if I could just write: > > while ((a, b) := calculate_next_couple

Re: The task is to invent names for things

On 27/10/2021 23.41, Karsten Hilbert wrote: > Am Tue, Oct 26, 2021 at 11:36:33PM + schrieb Stefan Ram: > >> xyzzy = lambda x: 2 * x >> >> . Sometimes, this can even lead to "naming paralysis", where >> one thinks excessively long about a good name. To avoid this >> naming paralysis, one

Re: The task is to invent names for things

On Thu, 28 Oct 2021 00:41:41 +0200, Peter J. Holzer wrote: > On 2021-10-27 12:41:56 +0200, Karsten Hilbert wrote: >> Am Tue, Oct 26, 2021 at 11:36:33PM + schrieb Stefan Ram: >> > xyzzy = lambda x: 2 * x >> > . Sometimes, this can even lead to "naming paralysis", where one >> > thinks exces

Re: The task is to invent names for things

On Thu, 28 Oct 2021 00:38:17 +, Eli the Bearded wrote: > In comp.lang.python, Peter J. Holzer wrote: > ^^ > > Those all work. But if you are writing a new web framework and you name > your method to log stuff to a remote server "Britney" because you were > listening the sing

Re: Python script seems to stop running when handling very large dataset

On 30/10/2021 11.42, Shaozhong SHI wrote: > Python script works well, but seems to stop running at a certain point when > handling very large dataset. > > Can anyone shed light on this? Storage space? Taking time to load/format/process data-set? -- Regards, =dn -- https://mail.python.org/mailm

Re: The task is to invent names for things

On 29/10/2021 07.07, Stefan Ram wrote: > The name should not be "optimized" for a certain use case > (as for the use in an if expression) only. "We", "have", > and "any" carry little information. A name should pack as > much information as possible in as least characters as > possible. So

Re: Getting Directory of Command Line Entry Point For Packages

On 13/11/2021 10.51, Abdur-Rahmaan Janhangeer wrote: > Greetings list, > > Let's say i created a package named miaw > > miaw also has a cli command called miaw > > miaw prints files and folders in the directory it is called in > > except that when miaw is used, it prints the files and folders i

OT: Alternatives to Jupyter Notebook

On 15/11/2021 12.24, Paige Bailey wrote: > If you're experiencing issues with Jupyter, perhaps try JupyterLab: > JupyterLab Documentation — JupyterLab 3.2.3 documentation > > > Or VS Code, which is also open-source and has support for Jupyter notebook

Re: Advantages of Default Factory in Dataclasses

On 17/11/2021 02.04, Abdur-Rahmaan Janhangeer wrote: > A simple question: why do we need field(default_factory ) in dataclasses? > > Why not make that field as an attribute return a function? > > Useful implementation examples / use cases appreciated. It's an interesting question: We could defi

Re: import question

On 20/11/2021 03.38, lucas wrote: > ok. all good advice. thank you for that. and with all that I've decided > what to do. > > I'm going to close off any server-side python access so that I don't expose > my server or the file system to vulnerabilities and/or wonton attacks. I am > building

Re: Unexpected behaviour of math.floor, round and int functions (rounding)

On 20/11/2021 09.17, Chris Angelico wrote: > On Sat, Nov 20, 2021 at 5:08 AM ast wrote: >> Le 19/11/2021 à 03:51, MRAB a écrit : >>> On 2021-11-19 02:40, [email protected] wrote: On 2021-11-18 at 23:16:32 -0300, René Silva Valdés wrote: > Working with floats i notic

Re: Unexpected behaviour of math.floor, round and int functions (rounding)

On 20/11/2021 10.21, Chris Angelico wrote: > On Sat, Nov 20, 2021 at 7:39 AM dn via Python-list > wrote: >>>> >>> 0.3 + 0.3 + 0.3 == 0.9 >>>> False >>> >>> That's because 0.3 is not 3/10. It's not because floats are >>>

Eventfd with epoll BlockingIOError

I have a C program that uses fork-execv to run Python 3.10 in a child process, and I am using eventfd with epoll for IPC between them.  The eventfd file descriptor is created in C and passed to Python through execv.  Once the Python child process starts I print the file descriptor to verify that

Re: Eventfd with epoll BlockingIOError

e to why both processes freeze when I poll on only one event in each one.  Thanks for any ideas based on this update, and thanks again for your earlier reply.  Jen -- Sent with Tutanota, the secure & ad-free mailbox. Nov 25, 2021, 06:34 by [email protected]: > > > &g

Re: Negative subscripts

On 26/11/2021 22.17, Frank Millman wrote: > In my program I have a for-loop like this - > for item in x[:-y]: > ...    [do stuff] > > 'y' may or may not be 0. If it is 0 I want to process the entire list > 'x', but of course -0 equals 0, so it returns an empty list. ... > But in my actual p

Friday Finking: Docstrings and DataClasses

How have you updated your (team's) standards and conventions for docstrings, when using dataclasses? NB the question is specifically class-related. Whereas many of the examples 'here' are of functions; a docstring is a docstring, is a docstring. The original word on the subject is/was "PEP 257

Re: Negative subscripts

On 27/11/2021 19.11, Frank Millman wrote: > On 2021-11-26 11:24 PM, dn via Python-list wrote: >> On 26/11/2021 22.17, Frank Millman wrote: >>> In my program I have a for-loop like this - >>> >>>>>> for item in x[:-y]: >>> ...    [do stuff]

Re: print('\N{flag: Mauritius}') not supported in py3.9

On 29/11/2021 02.18, Chris Angelico wrote: > On Mon, Nov 29, 2021 at 12:10 AM Abdur-Rahmaan Janhangeer > wrote: > > Flags are actually constructed from multiple codepoints. What you want > is to insert each codepoint separately. You can see them listed in the > second column of the table you link

Re: pyinstaller wrong classified as Windows virus

Have you tried using Nuitka - rather than pyInstalller - it means you distribute a single executable and the Python run time library (which they probably have already), and it has the advantage that it is a bit quicker than standard python. Rather than bundle the source code and interpreter in

Re: pyinstaller wrong classified as Windows virus

On 26/11/2021 07:13, Ulli Horlacher wrote But consider another possibility that your compiler software is compromised Then https://www.python.org/ftp/python/3.10.0/python-3.10.0-amd64.exe is infected. I doubt this. But you aren't using python3.10 to 'compile' the code to the executable that

Re: print('\N{flag: Mauritius}') not supported in py3.9

On 29/11/2021 12.06, Cameron Simpson wrote: > On 29Nov2021 09:19, Chris Angelico wrote: >> On Mon, Nov 29, 2021 at 8:10 AM dn via Python-list >> wrote: >>> However, when trying the above, with our local flag in (Fedora Linux, >>> Gnome) Terminal or PyCharm's

Re: Failure to Display Top menu

On 30/11/2021 07.43, Peter Mwale wrote: > Hello Christian, > Am referring to menu marked in picture below. It's not coming on my window. > > > On Sat, Nov 27, 2021, 20:19 Christian Gollwitzer wrote: > >> Am 26.11.21 um 21:38 schrieb Peter Mwale: >>> Hello, my python 3.10 shell is not displaying

Re: Negative subscripts

On 27/11/2021 21.23, Chris Angelico wrote: > On Sat, Nov 27, 2021 at 7:21 PM dn via Python-list > wrote: >> The expression list is evaluated once; it should yield an iterable >> object. An iterator is created for the result of the expression_list. >> The suite is the

Re: print('\N{flag: Mauritius}') not supported in py3.9

On 30/11/2021 10.19, Cameron Simpson wrote: > On 29Nov2021 22:25, DL Neil wrote: Probably a font issue. Not many fonts support the flags. >>> >>> Agree about the font support. Some terminal emulators make an effort to >>> have fallback fonts for when your preferred font lacks a glyph. IIRC >>

PyCharm settings - per: print('\N{flag: Mauritius}') not supported in py3.9

On 29/11/2021 10.08, dn via Python-list wrote: > On 29/11/2021 02.18, Chris Angelico wrote: >> On Mon, Nov 29, 2021 at 12:10 AM Abdur-Rahmaan Janhangeer >> wrote: >> >> Flags are actually constructed from multiple codepoints. What you want >> is to insert each

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